Description: Papers of Harold Rollin Wanless (1898-1970), professor of geology (1929-67), including correspondence, reports, manuscripts, photographs, publications, course materials, research data, maps and financial records relating to stratigraphy and sedimentation of carboniferous rocks of North American and Australia; Pennsylvanian geological formations; regional lithofacies studies; cyclical sedimentation; interpretation of aerial photography; academic work at Princeton (1916-24); field work, conferences and publications of the Illinois and Kentucky State Geological Surveys; paleontology; paleozoic glaciation; Division of General Studies courses in the physical sciences; research, dissertations, placement and publications of graduate students; administration of the Geology Department; service on committees of geological societies; international geological congresses (1933-60); meetings and conferences; visiting lectureships and sabbatical leaves; research grants; consulting services; bibliographies and publications.Ã?ÃÂ Organizational files include material relating to the AAAS, the Geological Society of America, the Illinois State Academy of Sciences and Sigma Xi.